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2020-08-14

[EN] FAQ 004628 | I get Warning No. 465: Line [No.] is simultaneously used as a boundary line...

Question:
I get Warning No. 465: "Line [No.] is simultaneously used as a boundary line of a surface and an opening". Do I have to adjust anything?

Answer:
Openings are used to create cutouts in surfaces. Finite elements are not generated and surface loads are not applied to the openings. Openings on the edge of a surface are allowed as well.

The boundary lines of a surface must form a closed continuous line. In our example, the warning message only appears for Surface 1, but not for Surface 2. Surface 1 is defined by three boundary lines on one edge, but Surface 2 is not.

A comparison of the results shows that you can model your surfaces with openings in all three cases.